java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:15,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:15,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:15,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:15,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:15,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:15,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:15,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:15,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:15,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:15,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:15,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:15,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:15,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:15,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:15,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:15,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:15,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:15,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:15,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:15,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:15,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:15,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:15,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:15,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:15,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:15,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:15,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:15,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:15,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:15,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:15,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:15,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:15,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:15,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:15,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:15,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:15,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:15,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:15,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:15,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:15,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:15,476 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:15,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:15,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:15,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:15,478 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:15,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:15,479 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:15,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:15,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:15,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:15,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:15,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:15,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:15,480 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:15,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:15,480 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:15,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:15,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:15,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:15,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:15,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:15,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:15,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:15,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:15,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:15,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:15,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:15,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:15,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:15,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:15,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:15,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:15,792 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:15,792 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:15,793 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product31.cil.c [2019-10-13 21:15:15,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6d596da4/efe2fb6a03854687b5fb0e8d6b7184dd/FLAG7a692a098 [2019-10-13 21:15:16,504 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:16,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product31.cil.c [2019-10-13 21:15:16,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6d596da4/efe2fb6a03854687b5fb0e8d6b7184dd/FLAG7a692a098 [2019-10-13 21:15:16,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6d596da4/efe2fb6a03854687b5fb0e8d6b7184dd [2019-10-13 21:15:16,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:16,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:16,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:16,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:16,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:16,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:16" (1/1) ... [2019-10-13 21:15:16,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b178505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:16, skipping insertion in model container [2019-10-13 21:15:16,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:16" (1/1) ... [2019-10-13 21:15:16,752 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:16,822 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:17,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:17,587 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:17,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:17,873 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:17,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17 WrapperNode [2019-10-13 21:15:17,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:17,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:17,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:17,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:17,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:17,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:17,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:17,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:18,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:18,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:18,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:18,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:15:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:18,243 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:15:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:18,247 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:18,247 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:18,247 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:15:18,247 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:18,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:18,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-13 21:15:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:15:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:18,249 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:15:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:15:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:15:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-13 21:15:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:15:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:20,471 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:20,472 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:20,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:20 BoogieIcfgContainer [2019-10-13 21:15:20,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:20,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:20,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:20,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:20,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:16" (1/3) ... [2019-10-13 21:15:20,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9642c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:20, skipping insertion in model container [2019-10-13 21:15:20,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (2/3) ... [2019-10-13 21:15:20,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9642c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:20, skipping insertion in model container [2019-10-13 21:15:20,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:20" (3/3) ... [2019-10-13 21:15:20,485 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2019-10-13 21:15:20,496 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:20,506 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:20,519 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:20,551 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:20,551 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:20,551 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:20,552 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:20,552 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:20,552 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:20,552 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:20,552 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states. [2019-10-13 21:15:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-13 21:15:20,617 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:20,623 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:20,626 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:20,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1257961618, now seen corresponding path program 1 times [2019-10-13 21:15:20,646 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:20,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522980644] [2019-10-13 21:15:20,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:20,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:20,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:21,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522980644] [2019-10-13 21:15:21,450 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:21,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:21,451 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994922356] [2019-10-13 21:15:21,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:21,460 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:21,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:21,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:21,478 INFO L87 Difference]: Start difference. First operand 560 states. Second operand 2 states. [2019-10-13 21:15:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:21,580 INFO L93 Difference]: Finished difference Result 862 states and 1137 transitions. [2019-10-13 21:15:21,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:21,582 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 211 [2019-10-13 21:15:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:21,609 INFO L225 Difference]: With dead ends: 862 [2019-10-13 21:15:21,609 INFO L226 Difference]: Without dead ends: 537 [2019-10-13 21:15:21,616 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:21,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-10-13 21:15:21,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2019-10-13 21:15:21,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-13 21:15:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 710 transitions. [2019-10-13 21:15:21,714 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 710 transitions. Word has length 211 [2019-10-13 21:15:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:21,716 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 710 transitions. [2019-10-13 21:15:21,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 710 transitions. [2019-10-13 21:15:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-13 21:15:21,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:21,722 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:21,723 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash 836943149, now seen corresponding path program 1 times [2019-10-13 21:15:21,723 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:21,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127205706] [2019-10-13 21:15:21,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:21,724 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:21,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:22,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127205706] [2019-10-13 21:15:22,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:22,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:22,041 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635179914] [2019-10-13 21:15:22,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:22,050 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:22,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:22,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,051 INFO L87 Difference]: Start difference. First operand 537 states and 710 transitions. Second operand 3 states. [2019-10-13 21:15:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,145 INFO L93 Difference]: Finished difference Result 845 states and 1100 transitions. [2019-10-13 21:15:22,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:22,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2019-10-13 21:15:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,154 INFO L225 Difference]: With dead ends: 845 [2019-10-13 21:15:22,155 INFO L226 Difference]: Without dead ends: 540 [2019-10-13 21:15:22,159 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2019-10-13 21:15:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 539. [2019-10-13 21:15:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-13 21:15:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 712 transitions. [2019-10-13 21:15:22,216 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 712 transitions. Word has length 212 [2019-10-13 21:15:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,217 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 712 transitions. [2019-10-13 21:15:22,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 712 transitions. [2019-10-13 21:15:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:15:22,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,225 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:22,226 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1845626649, now seen corresponding path program 1 times [2019-10-13 21:15:22,226 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474209031] [2019-10-13 21:15:22,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:22,434 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474209031] [2019-10-13 21:15:22,434 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:22,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:22,435 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808718953] [2019-10-13 21:15:22,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:22,441 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:22,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:22,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,442 INFO L87 Difference]: Start difference. First operand 539 states and 712 transitions. Second operand 3 states. [2019-10-13 21:15:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,523 INFO L93 Difference]: Finished difference Result 1054 states and 1422 transitions. [2019-10-13 21:15:22,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:22,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2019-10-13 21:15:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,540 INFO L225 Difference]: With dead ends: 1054 [2019-10-13 21:15:22,540 INFO L226 Difference]: Without dead ends: 580 [2019-10-13 21:15:22,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2019-10-13 21:15:22,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 579. [2019-10-13 21:15:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-10-13 21:15:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 781 transitions. [2019-10-13 21:15:22,611 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 781 transitions. Word has length 218 [2019-10-13 21:15:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,612 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 781 transitions. [2019-10-13 21:15:22,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:22,613 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 781 transitions. [2019-10-13 21:15:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-13 21:15:22,621 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,623 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:22,624 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,624 INFO L82 PathProgramCache]: Analyzing trace with hash 460483544, now seen corresponding path program 1 times [2019-10-13 21:15:22,625 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173678456] [2019-10-13 21:15:22,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:23,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173678456] [2019-10-13 21:15:23,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935687158] [2019-10-13 21:15:23,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:24,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:24,388 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:24,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:24,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:25,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:25,178 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:25,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:15:25,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759268331] [2019-10-13 21:15:25,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:25,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:25,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:25,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:25,181 INFO L87 Difference]: Start difference. First operand 579 states and 781 transitions. Second operand 9 states. [2019-10-13 21:15:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:26,634 INFO L93 Difference]: Finished difference Result 1136 states and 1542 transitions. [2019-10-13 21:15:26,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:26,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2019-10-13 21:15:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:26,641 INFO L225 Difference]: With dead ends: 1136 [2019-10-13 21:15:26,641 INFO L226 Difference]: Without dead ends: 593 [2019-10-13 21:15:26,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 427 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:15:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-13 21:15:26,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2019-10-13 21:15:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2019-10-13 21:15:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 799 transitions. [2019-10-13 21:15:26,674 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 799 transitions. Word has length 219 [2019-10-13 21:15:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:26,674 INFO L462 AbstractCegarLoop]: Abstraction has 593 states and 799 transitions. [2019-10-13 21:15:26,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 799 transitions. [2019-10-13 21:15:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-13 21:15:26,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:26,679 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:26,886 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:26,886 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:26,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:26,887 INFO L82 PathProgramCache]: Analyzing trace with hash 572253340, now seen corresponding path program 1 times [2019-10-13 21:15:26,888 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:26,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633596078] [2019-10-13 21:15:26,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:26,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:26,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:27,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633596078] [2019-10-13 21:15:27,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051286194] [2019-10-13 21:15:27,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:28,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:28,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:28,271 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:28,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:28,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:28,868 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:28,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:15:28,868 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582078105] [2019-10-13 21:15:28,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:28,872 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:28,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:28,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:28,873 INFO L87 Difference]: Start difference. First operand 593 states and 799 transitions. Second operand 7 states. [2019-10-13 21:15:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:30,244 INFO L93 Difference]: Finished difference Result 1137 states and 1546 transitions. [2019-10-13 21:15:30,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:30,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2019-10-13 21:15:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:30,250 INFO L225 Difference]: With dead ends: 1137 [2019-10-13 21:15:30,251 INFO L226 Difference]: Without dead ends: 595 [2019-10-13 21:15:30,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 434 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:15:30,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-13 21:15:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-13 21:15:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-13 21:15:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 802 transitions. [2019-10-13 21:15:30,290 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 802 transitions. Word has length 220 [2019-10-13 21:15:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:30,291 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 802 transitions. [2019-10-13 21:15:30,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 802 transitions. [2019-10-13 21:15:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-13 21:15:30,295 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:30,296 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:30,502 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:30,503 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:30,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:30,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1312168313, now seen corresponding path program 1 times [2019-10-13 21:15:30,504 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:30,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992985462] [2019-10-13 21:15:30,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:30,505 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:30,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:30,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992985462] [2019-10-13 21:15:30,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010353654] [2019-10-13 21:15:30,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:31,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:31,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:31,987 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:32,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:32,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:32,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:32,616 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:32,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:15:32,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516406284] [2019-10-13 21:15:32,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:32,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:32,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:15:32,619 INFO L87 Difference]: Start difference. First operand 595 states and 802 transitions. Second operand 16 states. [2019-10-13 21:15:35,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:35,000 INFO L93 Difference]: Finished difference Result 1141 states and 1546 transitions. [2019-10-13 21:15:35,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:35,001 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 221 [2019-10-13 21:15:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:35,005 INFO L225 Difference]: With dead ends: 1141 [2019-10-13 21:15:35,005 INFO L226 Difference]: Without dead ends: 607 [2019-10-13 21:15:35,008 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 431 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:15:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2019-10-13 21:15:35,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 605. [2019-10-13 21:15:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-13 21:15:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 813 transitions. [2019-10-13 21:15:35,035 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 813 transitions. Word has length 221 [2019-10-13 21:15:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:35,035 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 813 transitions. [2019-10-13 21:15:35,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 813 transitions. [2019-10-13 21:15:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-13 21:15:35,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:35,039 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:35,247 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:35,247 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:35,248 INFO L82 PathProgramCache]: Analyzing trace with hash -283937073, now seen corresponding path program 2 times [2019-10-13 21:15:35,249 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:35,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321977023] [2019-10-13 21:15:35,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:35,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:35,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321977023] [2019-10-13 21:15:35,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233568069] [2019-10-13 21:15:35,590 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:36,199 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:36,199 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:36,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:36,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:36,508 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:36,964 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:36,964 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:15:36,965 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010180724] [2019-10-13 21:15:36,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:36,966 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:36,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:36,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:15:36,967 INFO L87 Difference]: Start difference. First operand 605 states and 813 transitions. Second operand 14 states. [2019-10-13 21:15:39,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:39,144 INFO L93 Difference]: Finished difference Result 2039 states and 2774 transitions. [2019-10-13 21:15:39,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:39,145 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 222 [2019-10-13 21:15:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:39,160 INFO L225 Difference]: With dead ends: 2039 [2019-10-13 21:15:39,160 INFO L226 Difference]: Without dead ends: 1747 [2019-10-13 21:15:39,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 442 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:15:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2019-10-13 21:15:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1407. [2019-10-13 21:15:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2019-10-13 21:15:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1953 transitions. [2019-10-13 21:15:39,278 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1953 transitions. Word has length 222 [2019-10-13 21:15:39,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:39,282 INFO L462 AbstractCegarLoop]: Abstraction has 1407 states and 1953 transitions. [2019-10-13 21:15:39,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:15:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1953 transitions. [2019-10-13 21:15:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-13 21:15:39,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:39,290 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:39,507 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:39,507 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:39,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1231802037, now seen corresponding path program 1 times [2019-10-13 21:15:39,509 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:39,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562302857] [2019-10-13 21:15:39,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:39,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:39,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:39,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562302857] [2019-10-13 21:15:39,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981310953] [2019-10-13 21:15:39,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:40,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:40,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:40,737 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:41,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:41,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:41,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:41,376 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:41,376 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:15:41,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117374393] [2019-10-13 21:15:41,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:41,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:41,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:41,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:41,379 INFO L87 Difference]: Start difference. First operand 1407 states and 1953 transitions. Second operand 15 states. [2019-10-13 21:15:43,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:43,029 INFO L93 Difference]: Finished difference Result 2708 states and 3782 transitions. [2019-10-13 21:15:43,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:43,030 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 223 [2019-10-13 21:15:43,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:43,039 INFO L225 Difference]: With dead ends: 2708 [2019-10-13 21:15:43,039 INFO L226 Difference]: Without dead ends: 1413 [2019-10-13 21:15:43,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 435 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2019-10-13 21:15:43,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1407. [2019-10-13 21:15:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2019-10-13 21:15:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1951 transitions. [2019-10-13 21:15:43,111 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1951 transitions. Word has length 223 [2019-10-13 21:15:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:43,112 INFO L462 AbstractCegarLoop]: Abstraction has 1407 states and 1951 transitions. [2019-10-13 21:15:43,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1951 transitions. [2019-10-13 21:15:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-13 21:15:43,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:43,119 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:43,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:43,326 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:43,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:43,327 INFO L82 PathProgramCache]: Analyzing trace with hash 982754150, now seen corresponding path program 1 times [2019-10-13 21:15:43,327 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:43,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125128122] [2019-10-13 21:15:43,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:43,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:43,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:43,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125128122] [2019-10-13 21:15:43,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073943531] [2019-10-13 21:15:43,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:44,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:44,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:44,426 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:44,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:44,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:44,879 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:44,879 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:15:44,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790830168] [2019-10-13 21:15:44,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:44,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:44,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:44,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:44,882 INFO L87 Difference]: Start difference. First operand 1407 states and 1951 transitions. Second operand 12 states. [2019-10-13 21:15:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:46,331 INFO L93 Difference]: Finished difference Result 2235 states and 3058 transitions. [2019-10-13 21:15:46,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:46,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 224 [2019-10-13 21:15:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:46,340 INFO L225 Difference]: With dead ends: 2235 [2019-10-13 21:15:46,340 INFO L226 Difference]: Without dead ends: 1183 [2019-10-13 21:15:46,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 442 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-10-13 21:15:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2019-10-13 21:15:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-10-13 21:15:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1602 transitions. [2019-10-13 21:15:46,398 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1602 transitions. Word has length 224 [2019-10-13 21:15:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:46,398 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 1602 transitions. [2019-10-13 21:15:46,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:46,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1602 transitions. [2019-10-13 21:15:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-13 21:15:46,404 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:46,405 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:46,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:46,613 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:46,613 INFO L82 PathProgramCache]: Analyzing trace with hash -481533873, now seen corresponding path program 2 times [2019-10-13 21:15:46,613 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:46,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25659603] [2019-10-13 21:15:46,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:46,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:46,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:46,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25659603] [2019-10-13 21:15:46,914 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271029175] [2019-10-13 21:15:46,914 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:47,465 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:47,466 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:47,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:47,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:47,633 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:48,131 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:48,131 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-13 21:15:48,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25363459] [2019-10-13 21:15:48,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:48,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:48,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:48,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:15:48,137 INFO L87 Difference]: Start difference. First operand 1183 states and 1602 transitions. Second operand 14 states.